Nian road



(No Model.)

G. A. CHAPMAN.

GATHETER.

Patented May 7, 1889.

All /f I.

UNITED STATES PATENT OFFICE.

CHARLES ARTHUR CHAPMAN, OE No. S STOOK OROHARD STREET, CALEDO- NIAN ROAD, LONDON, OOUNTY OE MIDDLESEX, ENGLAND, ASSIGNOR TO sARDY, GOLES a co., OE NEW YORK, N. Y.

C AT H ET E R SPECIFICATION forming part of etters Patent o. 402,902, dated May 7, 1889. Application led April 7, 1888. Serial No. 269,971. (No model.) Iatented in England September 16, 1887, No. 12,577.

To all whom it may concern: IV is an enlarged perspective view of the Be it known that I, CHARLES ARTHUR CHAl metallic protecting-point.

MAN, a subject of the Queen of Great Britain, A is the silver protective point.; a, the eye.

and a resident of N o. 8 Stock Orchard Street, b is the woven Belfast linen thread; and c 5 Caledonian Road, London, N., in the county represents the elastic gum. 4o of Middlesex, England, have invented certain It will be seen that a catheter produced as new and useful Improvements'in Catheters, above described has several important ad- Of which the following is a specification. vantages over those formed Wholly of elastic My invention has reference to a type of gum, inasmuch as the silver point being imo surgical appliances known as catheters perishable the risk of cracking and disinte- 45 4and is devised with the View of overcominga gration of the material is obviated, and thus. well-known disadvantage and source of dana source of danger is prevented, and, further, ger. the passage of the instrument past the strict- Hitherto catheters have been formed of an nre into the bladder is greatly facilitated, 15 elastic gum, which by alternate exposure to allowing of the free ilowof water or discharge 5o moisture and dryness gradually perishes and therefrom.

' cracks. In this condition it may happen that Having fully described the nature of my While the instrument is being used a part of invention, what I desire to claim and secure the end would break away and thus cause a by Letters Patent iszo certain amount of danger and risk. In combinationwith a flexible catheter, 55

The device according to my invention comsubstantially as hereinbefore described, a

prises the attachment or adaptation to the rigid former located in the end of the catheend of an elastic gum catheter of a silver ter and contiguous to the eye Or opening of point having an eye formed therein. Said the same, for the purposes set forth.

2 5 silver protective point having been inserted In testimony that I claim the foregoing as 6c in the end of the catheter would be covered my invention I affix my signature in presence witha material formed of stronglinen thread, of two witnesses.

preferably that known as Belfast linen CHARLES ARTHUR CHAPMAN. thread, which is carefully woven, and nally lVitnesses: 3o coated with a very elastic gum. JAMES STEVENSON,

Figure I is a catheter having a rounded Greg/s Inn Chambers, 20 High Holbowi, end. Fig. II represents a catheter having an London, W O. elongated tapered end4 Fig. Ill is a sectional EDGAR GEORGE, v view of a catheter drawn to an enlarged scale, Assistant to above, 2O High Holborn, Lon- 3,5 and showing the construction thereof. Fig. donf, l/V. O. 

